Watermelon rind is not real. Watermelon is a more nutritious food, food is generally not able to achieve the efficacy of the treatment of disease, so the watermelon rind rub heat rash is generally not a better effect. Watermelon contains a lot of nutrients, such as vitamins, proteins and various trace elements, and watermelon rind also has some nutrients, which can also be eaten. If prickly heat is already present, it is best not to use watermelon rind to wipe it off, and you need to observe the severity of the prickly heat. When prickly heat is mild, it is usually not necessary to treat it, and you should pay attention to personal hygiene. If the prickly heat is more, affecting the normal life of the individual, you can use zinc oxide, glycerite lotion and other drugs under the guidance of the doctor. When the weather is hot, you must wash it in time to avoid the accumulation of sweat and disease. When the symptoms are serious, go to the hospital in time, and standardize the treatment under the guidance of the doctor.